if the heads are properly ported they are worth at least $500 & the intake will bring some $$ too
the Performer intakes make less power than a stock intake , sell it at the swap meet too
with the extra CI and smaller intake the low deck uses you need all the manifold you can get , the RPM would be my first choice , Weiand makes a Stealth & Action Plus intake both are similar to stock intake in appeance & wil offer better performance , if I remember right the Action Plus is the bigger one, use the bigger of the 2